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Read MoreGetting Your Business Number: A Step-by-Step Guide
Navigate the CRA registration process for your new business. We’ll walk you through sole proprietorships, partnerships, and corporations in Canada — and why this number matters from day one.
Why Your Business Number Matters
You’re starting a business — there’s a lot to figure out. But here’s something that shouldn’t be complicated: getting your Business Number from the Canada Revenue Agency. It’s straightforward once you know what you’re doing.
Your Business Number is essentially your company’s tax ID. The CRA uses it to track your income tax, GST/HST registrations, and payroll accounts if you’ve got employees. Without it, you can’t legally operate most business structures in Canada. And we’re not talking about some long, bureaucratic process — it’s actually pretty efficient if you go in prepared.
The real advantage? Getting this done early means you’re set up properly from the start. You won’t be scrambling later or dealing with missed deadlines. Plus, having your number ready makes opening a business bank account and setting up your accounting system much smoother.
The Registration Process: Three Main Routes
Your path depends on your business structure. Let’s break down what applies to you.
01
Sole Proprietorship
You’re flying solo — no incorporation, just you and your business. If you’re using your own name as your business name, you can often register online through My Business Account. Takes about 15 minutes. If you want a different business name (like “Sarah’s Consulting” instead of just your name), you’ll need to register that name first with your provincial government before getting your federal Business Number.
Cost? Zero. The CRA doesn’t charge for Business Number registration. You’ll still need a provincial business license depending on your industry, but the federal number itself is free.
02
Partnership
Two or more people in business together. You’ll need a Partnership Agreement first — this is the document that spells out roles, profit sharing, and what happens if someone wants out. Once that’s done, you’ll register your partnership name provincially, then apply for your Business Number through the CRA.
The CRA will ask for details about all partners and their Social Insurance Numbers. Make sure you’ve got everyone’s SIN ready before you start the application. It moves faster when you’re organized going in.
03
Corporation
You’ve incorporated federally or provincially. Here’s the good news — if you incorporated with the CRA involved (like through Corporations Canada), your Business Number often gets assigned automatically. You don’t even have to ask for it. If you incorporated provincially only, you’ll need to apply separately for the federal Business Number.
You’ll need your incorporation documents and details about directors and shareholders. The process is the same online or by mail, but online is definitely faster — usually confirmed within a few days.
How to Actually Apply
You’ve got two main options: online through My Business Account or by mail. Online is faster — you’ll get your number confirmed within a few days instead of 2-3 weeks. You don’t need to register for My Business Account first; you can apply without one, though having it makes managing your account easier down the line.
Here’s what you’ll need regardless of your business structure: proof of identity (driver’s license works), proof of your address (utility bill or lease agreement), and details about your business — what you do, expected revenue, number of employees you’re planning to hire. If you’re incorporating, you’ll need your incorporation certificate.
The application itself isn’t complicated. They’re asking straightforward questions: What’s your business address? When are you starting? Will you be hiring employees? Do you plan to collect GST/HST? You’re just being honest about your setup. No trick questions. If you’re unsure about something, you can always call the CRA’s Business Enquiries line — they’re surprisingly helpful, and wait times are usually reasonable if you call early morning.
Timeline: What to Expect
Timing matters when you’re trying to get your business off the ground. Here’s the realistic timeline depending on how you apply.
Online Application
3-5 business days for confirmation. You’ll get your number right away in most cases. They might ask for additional documents, but that’s rare for straightforward applications.
Mail Application
2-3 weeks from when they receive your forms. This assumes everything’s complete and correct. If something’s missing, you’re looking at additional delays while they contact you.
Phone Application
Same day to next business day . You can actually call and apply over the phone. It’s not the fastest method overall, but if you need it done immediately and prefer talking to someone, it works.
Common Mistakes (And How to Avoid Them)
We’ve seen people delay their registration because they weren’t sure about a detail. Here’s the thing — you don’t need to be 100% certain about everything. You can estimate your revenue or say you’re unsure about employee count. You can update it later. The CRA’s more interested in getting you registered than in perfect accuracy at this stage.
One real mistake people make: using an unregistered business name. If you want to operate under a name that’s not your legal name (for sole proprietorships), register it provincially first. Trying to apply for a Business Number with an unregistered name gets rejected. Takes five minutes to register the name, saves you weeks of back-and-forth later.
Another one: incomplete applications. Missing a piece of information or a signature means delays. Double-check everything before hitting submit. Print it out and review it like you’re checking for typos in an important email. It takes two minutes and saves you frustration.
After You Get Your Number
Congratulations — you’ve got your Business Number. Now what? Set up My Business Account immediately. It’s the CRA’s portal for managing your account, filing returns, and checking on any notices. You’ll use it for GST/HST filing, corporate tax returns, and payroll deductions if you hire people.
Open a business bank account using your Business Number. Banks will ask for it, and having separate business and personal finances makes accounting infinitely simpler. Your accountant will thank you later.
Start tracking your expenses and revenue from day one — even if you haven’t officially “opened” yet. That software setup cost, those supplies you bought to prepare? Document it. The sooner you build this habit, the easier tax time becomes. You’ll have everything organized instead of scrambling through receipts in March.
If you’re planning to hire employees or collect GST/HST, register for those programs when you’re ready. You don’t need them immediately, but don’t wait until the last minute. A few weeks of notice to the CRA prevents headaches when you actually start those activities.
Important Disclaimer
This guide is educational information about the Business Number registration process in Canada. It’s not legal or tax advice. Registration requirements and processes can vary by province, business structure, and individual circumstances. We strongly recommend consulting with an accountant, lawyer, or contacting the Canada Revenue Agency directly (1-800-959-5525) for guidance specific to your situation. Tax laws change, and what applies today might differ next year. Get professional advice before making major decisions about your business structure or registration approach.
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